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As an important injection molding material, polyurethane has been widely used in various manufacturing fields after years of development. The material structure of polyurethane is relatively stable, and its physical and chemical properties can be adjusted according to product requirements. It has strong plasticity and is one of the most practical materials.
So, what is the principle of polyurethane foam?
Polyurethane foam is a thermoplastic foam material, commonly used in the production of car seats, building insulation materials, sole materials. Its foaming principle is to enter the polyurethane premixed liquid into the mold, and generate gas through chemical reaction and expand in the mold, so as to form a lightweight, uniform foaming material. Polyurethane foaming can be achieved in airtight molds, so that seal densities of various shapes and densities can be formed.
In addition, polyurethane also has some other characteristics:
1. Polyurethane can react chemically under different external energy. For example, the reaction can be carried out without the need for a solvent.
2. Polyurethane has few solvents, so it will not emit harmful substances.
3. Polyurethane has strong plasticity, and its physical and chemical properties can be adjusted as needed.
So, what are the application examples of polyurethane foaming?
At present, polyurethane foaming technology has been widely used in various industries. The following are some typical application examples:
1. Car seats: Polyurethane foam materials are widely used in the manufacture of car seats. Polyurethane foam seat cushion is the most common car seat cushion, with strong sports shock absorption and compression resistance.
2. Building insulation material: polyurethane foam has good thermal insulation performance. Polyurethane foams commonly used in the construction industry are all foams made using foaming agents and have strong insulating capabilities.
3. sole material: polyurethane foam is also widely used in the manufacture of sole materials. The polyurethane foam insole has good support and elasticity.
polyurethane foam is a very useful injection molding material. Through a detailed understanding of this material, we can create more efficient production processes and thus make a greater contribution to the development of the manufacturing industry.
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